| Summary: | Debug WIndow aborts when hovering over a variable when debugging bash | ||
|---|---|---|---|
| Product: | frysk | Reporter: | Rick Moseley <rmoseley> |
| Component: | general | Assignee: | Unassigned <frysk-bugzilla> |
| Status: | ASSIGNED --- | ||
| Severity: | normal | ||
| Priority: | P2 | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | ||
| Bug Depends on: | |||
| Bug Blocks: | 1633, 3620 | ||
fhpd seems to have the same problem. So this basically eliminates any UI code or Java-Gnome. To reproduce, bring up fhpd and attach it to a bash shell(bash-debuginfo should be installed of course). Do a "down 13" and then a "examine subshell_environment". Here is what I get when I run this sequence: ./build/frysk-core/frysk/bindir/fhpd 9128 Attached to process 9128 (fhpd) down 13 #13 0x0805d7d0 in main () from /bin/bash (fhpd) examine subshell_environment procs 1 tasks 1 Aborted (core dumped) In the above sequence I have set "ulimit -c unlimited" set before I run fhpd. When trying to look at the core file with fstack I get the following error which I will file in another bug: ./build/frysk-core/frysk/bindir/fstack -a core.18293 Task #18293 #0 0x00110402 in __kernel_vsyscall () from Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 at frysk.debuginfo.DebugInfoFrame.getSubprogram(DebugInfoFrame.java:81) at frysk.debuginfo.DebugInfoStackFactory.printStackTrace(DebugInfoStackFactory.java:143) at frysk.debuginfo.DebugInfoStackFactory.printTaskStackTrace(DebugInfoStackFactory.java:120) at frysk.util.StacktraceAction.printTasks(StacktraceAction.java:158) at frysk.util.StacktraceAction.allExistingTasksCompleted(StacktraceAction.java:205) at frysk.proc.ProcCoreAction.<init>(ProcCoreAction.java:60) at frysk.bindir.fstack.stackCore(fstack.java:145) at frysk.bindir.fstack.access$1(fstack.java:140) at frysk.bindir.fstack$2.parseCores(fstack.java:165) at frysk.util.CommandlineParser.doParse(CommandlineParser.java:169) at frysk.util.CommandlineParser.parse(CommandlineParser.java:109) at frysk.bindir.fstack.main(fstack.java:257) gdb core.18293 GNU gdb Red Hat Linux (6.6-15.fc7rh) Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-redhat-linux-gnu"... "/home/rmoseley/frysk-cvs/core.18293": not in executable format: File format not recognized |
On my Fedora 7/x86 machine, with all of the latest yum updates I have the source window aborting when I try to debug bash in the debug window. bash does has its debuginfo installed. I do not have this problem on my Fedora 6/x86_64 machine, all appears to work as advertised there. To reproduce, make sure the bash-debuginfo package is installed and bring up a bash shell somewhere. Now bring up the Debug Window and attach to the bash shell. On the F7/x86 machine you click on frame containing "main.c", frame #14 on x86, frame #13 on x86_64. Now scroll to around line #128("int login_shell = 0;") and move the cursor over the "login_shell" variable. You shouldnow see a "Aborted." message if you are on a F7/x86 machine. If I do a "ulimit -c unlimited" before starting frysk to get a core dump and then run "fstack -a" on the core dump I get: ./build/frysk-core/frysk/bindir/fstack -a core.9822 Task #9822 #0 0x00220802 in [unknown] from /usr/lib/libgtkjava-2.8.so #1 0x00000000 in [unknown] from Unknown Task #9823 #0 0x00220802 in [unknown] from /usr/lib/libgtkjava-2.8.so #1 0x00000000 in [unknown] from Unknown Task #9824 #0 0x00220802 in [unknown] from /usr/lib/libgtkjava-2.8.so #1 0x00000000 in [unknown] from Unknown I do have the debuginfo loaded for all of the packages frysk uses thanks to teresa's fdebuginfo utility. I have also tried using strace, but the results are indeterminate. Here is what the end of starce looks like: futex(0x9608d60, FUTEX_WAIT, 10303, NULL) = 0 futex(0x9608d8c, FUTEX_WAKE, 1) = 0 gettid() = 9966 gettid() = 9966 tkill(9969, SIGIO) = 0 futex(0x9608d60, FUTEX_WAIT, 10305, NULL) = 0 futex(0x9608d8c, FUTEX_WAKE, 1) = 0 --- SIGSEGV (Segmentation fault) @ 0 (0) --- rt_sigprocmask(SIG_UNBLOCK, [SEGV], NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0 tgkill(9966, 9966, SIGABRT) = 0 --- SIGABRT (Aborted) @ 0 (0) --- +++ killed by SIGABRT (core dumped) +++ The end of an ftrace looks like this: 10072.10074 <SYSCALL> rt_sigprocmask () 10072.10074 = 0 10072.10074 <SYSCALL> gettimeofday (-1228905960,0) 10072.10074 = 0 10072.10074 <SYSCALL> gettimeofday (-1228906040,0) 10072.10074 = 0 10072.10074 <SYSCALL> futex (0x9ff2d60,5,1,0x1) 10072.10074 = 1 10072.10072 = 0 10072.10074 <SYSCALL> gettimeofday (-1228905944,0)10072.10072 <SYSCALL> futex (0x9ff2d8c,1,1,0x9ff2d8c) 10072.10074 = 0 10072.10072 = 0 10072.10074 <SYSCALL> setitimer (0,0xb6c061f4,NULL) 10072.10074 = 0 10072.10074 <SYSCALL> rt_sigaction () 10072.10074 = 0 10072.10074 <SYSCALL> rt_sigaction () 10072.10074 = 0 10072.10074 <SYSCALL> setitimer (0,0xb6c061f4,NULL) 10072.10074 = 0 10072.10074 <SYSCALL> gettid () 10072.10074 = 10074 10072.10074 <SYSCALL> rt_sigprocmask () 10072.10074 = 0 10072.10074 <SYSCALL> rt_sigprocmask () 10072.10074 = 0 10072.10074 <SYSCALL> waitpid (-1,0x876de24,1073741824)10072.10072 <SYSCALL> rt_sigprocmask () 10072.10072 = 0 10072.10072 <SYSCALL> rt_sigprocmask () 10072.10072 = 0 10072.10072 <SYSCALL> tgkill () 10072.10072 = 0 trying to get a backtrace via gdb renders the following output: (gdb) file ./build/frysk-gui/frysk/gui/FryskGui Reading symbols from /home/rmoseley/frysk-cvs/build/frysk-gui/frysk/gui/FryskGui...done. (gdb) bt #0 0x00110402 in __kernel_vsyscall () #1 0x4a950fa0 in ?? () #2 0x4aa77ff4 in ?? () #3 0xb7fcc8f0 in ?? () #4 0xbffd7038 in ?? () #5 0x4a9528b1 in ?? () #6 0x00000006 in ?? () #7 0xbffd6fac in ?? () #8 0x00000000 in ?? ()